Exhaust gas treatment device for internal combustion engines

US4669261A · kind A · utility

Assignee

• J. Eberspaecher GmbH & Co. KG · DE

Inventors

• Siegfried Worner · Eßlingen, DE
• Walter ttle · Uhingen, DE

Key dates

• Filing date: Jan 2, 1986
• Grant date: Jun 2, 1987
• Expiry date: Jan 2, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2330/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An exhaust gas treatment device adapted to be connected into an exhaust line of an internal combustion engine comprises a porous body made of heat resistant material and having a plurality of conduits extending axially therethrough having an inlet end and an opposite outlet. The construction includes a closure member closing the inlet ends of at least some of the conduits. An additional closing member closes the outlet ends of at least some of the other of the conduits. A catalyst mesh material is positioned in at least some of the conduits which have open inlet ends. Exhaust gases flow into the inlet ends which are open. In some if not all of the cases, the opposite ends of the open inlet ends that is the outlet ends are closed so that the gases must flow through the porous walls of the porous body and move into contact with the catalyst mesh material of the others of the conduits and flow out the ends of those conduits which are open. The member which provides the closures for the individual conduits at the respective inlet and outlet ends may comprise simply plug elements or fixed or rotatable end members at each end which as closure plate parts arranged in substantially a check…